Jaguar S-type SE 2005.
Doesn't get a lot of use, say approx 30 miles a month.
All seemed well until yesterday - after about 3 miles I noticed these:-
ABS Fault / DCS not available and Cruise Control not available.
Also, the amber Engine Malfunction lamp is constantly on.
My scanner brings up codes P0306, P1316 and P1111, apparently pointing to a misfire problem with cylinder 6.
I disconnected the battery and did an overnight charge, but I'm still seeing the same faults.
I have never seen these indications before, and I'm confused as to why an apparent engine fault should show up at the same time as a brake fault ?
The car drives as normal.
Could I have some guidance please ?

 

Check your battery, may need to be replaced. When they get weak, things like this can and will happen. Car needs to be driven much more to keep the battery charged up.

 

Or get a good CTEK charger... My car gets very little use as well and I used to get the same weird problems until I got the charger and now I plug the car in when I'm not using it for extended periods.

 

As the guys have said, this sounds like a classic case of the battery reaching the end of it's service life.

Erase the codes and see if they return. Disconnecting the battery will do nothing in this respect.